Explore the mechanisms of acquired immunity, including active immunity developed through exposure or vaccination and passive immunity gained from antibodies. Understand how these processes protect against infections and their role in disease prevention.
Active immunity involves the production of memory cells, which provide long-term protection after exposure to antigens.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Passive immunity occurs when ready-made antibodies are received, such as those in motherâs milk (IgA).
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
The tetanus vaccine is a toxoid vaccine, meaning it contains an inactivated toxin to stimulate immunity.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Passive immunity is acquired through the transfer of ready-made antibodies, such as maternal antibodies or antibody injections.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Passive immunity occurs when ready-made antibodies, such as antitoxins, are introduced into the body.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Active acquired immunity develops when the immune system produces antibodies in response to an infection.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Active immunity provides long-lasting protection because it involves the formation of memory cells.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Live-attenuated vaccines contain weakened pathogens that stimulate an immune response without causing disease.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Vaccines stimulate active immunity by prompting the immune system to create memory cells.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Vaccines work by stimulating the immune system to produce memory cells that provide long-term immunity.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Vaccination provides **active** immunity by stimulating the immune system, not passive immunity.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Passive immunity is acquired when ready-made antibodies are transferred from another source, such as maternal antibodies or antibody injections.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
